<template>
  <el-menu
    default-active="1-4-1"
    class="el-menu-vertical-demo"
    background-color="#545c64"
    text-color="#fff"
    active-text-color="#ffd04b"
    @open="handleOpen"
    @close="handleClose"
    :collapse="isCollapse"
  >
    <h3>{{ isCollapse ? '后台' : '通用后台管理系统' }}</h3>

    <el-submenu v-for="item in hasChildren" :index="item.path" :key="item.path">
      <template slot="title">
        <i :class="'el-icon-' + item.icon"></i>
        <span slot="title">{{ item.label }}</span>
      </template>
      <el-menu-item-group v-for="(subItem, subIndex) in item.children" :key="subItem.path">
        <el-menu-item @click="clickMenu(subItem)" :index="subIndex">{{ subItem.label }}</el-menu-item>
      </el-menu-item-group>
    </el-submenu>

    <el-menu-item
      @click="clickMenu(item)"
      v-for="item in noChildren"
      :index="item.path"
      :key="item.path"
    >
      <i :class="'el-icon-' + item.icon"></i>
      <span slot="title">{{ item.label }}</span>
    </el-menu-item>
  </el-menu>
</template>

<style lang="less" scoped>
.el-menu-vertical-demo:not(.el-menu--collapse) {
  width: 200px;
  min-height: 400px;
}
.el-menu {
  height: 100vh;
  border: none;
  h3 {
    color: #fff;
    text-align: center;
    line-height: 48px;
  }
}
</style>

<script>
export default {
  data() {
    return {
      //   isCollapse: true,
      menu: [
        {
          path: '/',
          label: '项目管理',
          icon: 's-home',
          children: [
            {
              path: '/score',
              name: 'projectScore',
              label: '项目评分',
              icon: 'setting',
              url: 'Project/ProjectScore'
            },
            {
              path: '/add',
              name: 'projectAdd',
              label: '添加项目',
              icon: 'setting',
              url: 'Project/ProjectAdd'
            },
          ]
        },
        {
          label: '员工管理',
          icon: 'location',
          children: [
            {
              path: '/attendance',
              name: 'StaffAttendance',
              label: '考勤情况',
              icon: 'setting',
              url: 'Staff/StaffAttendance'
            },
            {
              path: '/events',
              name: 'MajorEvents',
              label: '重大事件记录',
              icon: 'setting',
              url: 'Staff/MajorEvents'
            },
          ]
        },
        {
          path: '/performance',
          name: 'PerformanceView',
          label: '部门绩效总览',
          icon: 'video-play',
          url: 'Performance/Performance'
        },
        {
          path: '/user',
          name: 'UserPool',
          label: '人才库',
          icon: 'user',
          url: 'UserManage/UserManage'
        },
      ]
    };
  },
  methods: {
    handleOpen(key, keyPath) {
      console.log(key, keyPath);
    },
    handleClose(key, keyPath) {
      console.log(key, keyPath);
    },
    clickMenu(item) {
      this.$router.push({
        name: item.name
      })
      this.$store.commit('selectMenu', item)
    }
  },
  computed: {
    noChildren() {
      return this.menu.filter(item => !item.children)
    },
    hasChildren() {
      return this.menu.filter(item => item.children)
    },
    isCollapse() {
      return this.$store.state.tab.isCollapse
    }
  }
}
</script>